have to / have +noun/pronoun

I have to meet them somehow.

Your other sentence is not a usual English structure.

Thanks for replying Mister Micawber, in 2nd sentence ,i tried to use verb "have" as a causative verb.if it is wrong use then what would be right,please help me to make 2nd sentence right.

anupam77i tried to use verb "have" as a causative verb

Generally, and as there, using the simple present tense usually creates an unusual sentence. When composing examples, always try to use another verb form when possible.

I would like to have them meet somehow.
I'm going to have them meet somehow.

i got it sir Mister Micawber, Thank you